condition mean min max Sterile Frond 1.5304469666666667 0.0629389 3.54192 Fertile Frond 1.96713 1.07909 3.52043 Young Stem with Root 0.383869 0.0 1.01037 Mature Stem with Root 4.340454333333334 0.817733 10.6819 Root 2.0827400000000003 1.81792 2.4815